Just to be clear, if I query with filter==AncestorTag, I'll get a true return value, even though the old files didn't even have the capability of storing that? I suppose it's somewhat arbitrary what you return at that point, but I would have thought false would make more sense - or are you saying this behaviour is necessary for LinkedScenes? I have to confess to not quite understanding this well enough to be sure, but it seems odd to me. I suppose soon enough we won't have any old files anyway...